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Features 3-1/2 digit, 10mm LCD display, data hold, auto ranging, over-range protection and indication, auto-power-off and spotlight.
Measures AC and DC voltages, resistance, capacitance, frequency and duty cycle and has diode and continuity test functions.
Supplied with crocodile clip, cigarette lighter plug, two probes, probe guard and 1.3m cable.

1.1. PERSONAL PRECAUTIONS

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When using this meter, please observe all normal safety rules concerning:
Protection against the dangers of electric current.
Protection of the meter against misuse.

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DO NOT

use leads if damaged or if the wire is exposed in any way. 

1.2. GENERAL SAFETY INSTRUCTIONS

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Familiarise yourself with the application and limitations of the meter as well as the potential hazards.

IF IN ANY DOUBT CONSULT

A QUALIFIED ELECTRICIAN.

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Before use, verify the meter’s operation my measuring a known voltage.

!

Before changing functions, disconnect test leads from the circuit under test.

!

Connect the test lead before connecting the test probe. When disconnecting, remove the test probe first.

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WARNING! 

Disconnect circuit power and discharge all high-voltage capacitors before testing resistance, diode or continuity.

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Use proper function and range for the measurement.

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Before operating the “Select” switch, disconnect the leads and test probes from the circuit under test.

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WARNING! 

Never perform resistance measurements on live circuits.

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Always be careful when working with voltages above 60Vdc or 30Vac rms. Keep your fingers behind the probe barriers while 
measuring.

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WARNING! CATll-Measurement. 

Category ll is for measurements performed on circuits directly connected to low-voltage 

supply. (Examples are measurements on domestic appliances, portable tools etc.). DO NOT use the meter to measure within 
Measurement Categories lll and lV.

"

DO NOT 

use the meter around explosive gas, vapour or dust.

!

Remove the test lead and probe from a circuit before opening the battery compartment.

"

DO NOT 

operate the meter with the battery cover removed.

!

When not in use, store the meter carefully in a safe, dry, childproof location. Storage temperature range - 10

O

C to 50

O

C.

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WARNING!

The warnings, cautions and instructions discussed in this manual cannot cover all possible conditions and situations 

that may occur. It must be understood that common sense and caution are factors which cannot be built into this product, but must 
be applied by the operator.

INSTRUCTIONS FOR:

AUTOMOTIVE PEN PROBE DIGITAL METER

MODEL:

TA300

Thank you for purchasing a Sealey product. Manufactured to a high standard this product will, if used according to these instructions and properly maintained,
give you years of trouble free performance.

1.

SAFETY INSTRUCTIONS

IMPORTANT:

PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS & CAUTIONS. USE THE PRODUCT

CORRECTLY AND WITH CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY CAUSE DAMAGE AND/OR PERSONAL INJURY AND WILL
INVALIDATE THE WARRANTY. PLEASE KEEP THESE INSTRUCTIONS SAFE FOR FUTURE USE.

2.

FEATURES

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Autorange.

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Overrange protection for all ranges.

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The maximum, permitted voltage between any terminal and ground: 600Vdc/ac rms.

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Display:  . . . . . . . . . . . . . . . . .LCD.

Polarity indication:   . . . . . . . . .”-” for negative polarity.

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Overrange indication:  . . . . . . .“OL” or “-OL”.

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Sampling time:   . . . . . . . . . . .0.4 second.

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Auto-power-off:   . . . . . . . . . . .15 minutes without operation.

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Power supply:   . . . . . . . . . . . .1.5V X 2 AAA.

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Low battery indication:   . . . . . .”      ” on display.

Operating temperature: . . . . . .0°C - 40°C.

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Storage temperature:  . . . . . . .-10°C - 50°C.

TA300 - 1 - 310807

Summary of Contents for TA300

Page 1: ...ow voltage supply Examples are measurements on domestic appliances portable tools etc DO NOT use the meter to measure within Measurement Categories lll and lV DO NOT use the meter around explosive gas vapour or dust Remove the test lead and probe from a circuit before opening the battery compartment DO NOT operate the meter with the battery cover removed When not in use store the meter carefully i...

Page 2: ...Accuracy 400mV 0 1mV 4V 1mV 0 8 4 40V 10mV 400V 100mV 600V 1V 1 4 RESISTANCE Range Resolution Accuracy 400Ω 0 1Ω 1 2 2 4kΩ 1Ω 40kΩ 10Ω 1 2 400kΩ 100Ω 4MΩ 1kΩ 1 2 2 40MΩ 10kΩ 1 5 2 CAPACITANCE Range Resolution Accuracy 4nF 1pF 25 5 40nF 10pF 400nF 100pF 4µF 1nF 10 5 40µF 1nF 100µF 100nF DUTY CYCLE Range Resolution Accuracy 0 1 99 0 01 2 5 4 DIODE Range Resolution Open circuit Voltage 1mV About 1 5V...

Page 3: ... 3 4 Read the reading NOTE The display will show the approximate value of the forward voltage drop of the diode If you connect the test probe and test lead across the diode in the wrong direction the display will show OL 4 4 TESTING FOR CONTINUITY 4 4 1 Set the function switch in position 4 4 2 Press the SELECT button to set the meter in range 4 4 3 Connect the test probe and test lead across the ...

Page 4: ...replace the cover and reinstall the screw NOTE Pay attention to the polarity of the new batteries do not reverse them otherwise the unit will be damaged Only use the specified batteries 2 x 1 5V AAA WARNING DO NOT attempt to repair or service your meter unless you are qualified to do so and have the relevant calibration performance test and service information To avoid electrical shock or damage t...

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